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Entry  Thu Jun 21 23:59:12 2018, shruti, Update, PEM, Seismometer temp control 
    Reply  Mon Jun 25 22:27:57 2018, shruti, Update, PEM, Seismometer temp control - heater circuit 
    Reply  Sun Jul 29 20:03:02 2018, rana, Update, PEM, Seismometer temp control Screen_Shot_2018-07-29_at_8.00.27_PM.png
Message ID: 14113     Entry time: Sun Jul 29 20:03:02 2018     In reply to: 14001
Author: rana 
Type: Update 
Category: PEM 
Subject: Seismometer temp control 

While Shruti is re-building Kira's heater circuit, I looked up how to do one of these (i.e. what does a real EE say about how to build a current source?):

It turns out that there is an Analog Devices application note (AN-968) about this (as there usually is once we get tired of playing around and try to look up the right answer).

I've linked to the note and attached the recommended schematic for high current applications. We'll go ahead as is, but we'll make a PCB according to this App Note for the v3 circuit.

 

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